RepeatLayout Enumeration

  • Referenz

Definition

Namespace:
System.Web.UI.WebControls
Assembly:
System.Web.dll

Gibt das Layout der Elemente in einem Listensteuerelement an.

public enum class RepeatLayout
public enum RepeatLayout
type RepeatLayout = 
Public Enum RepeatLayout
Vererbung
Object
ValueType
Enum
RepeatLayout

Felder

Flow 1

Die Elemente werden ohne Tabellenstruktur angezeigt. Gerendertes Markup besteht aus einem span-Element, und Elemente werden durch br-Elemente getrennt.
OrderedList 3

Die Elemente werden ohne Tabellenstruktur angezeigt. Gerendertes Markup besteht aus einem ol-Element, das li-Elemente enthält.
Dieser Wert ist seit ASP.NET 4 neu und stellt nur für die Steuerelemente CheckBoxList und RadioButtonList eine gültige Option dar.
Table 0

Die Elemente werden in einer Tabelle angezeigt.
Diese Option führt dazu, dass das Steuerelement die HTML rendert, die möglicherweise nicht den Barrierefreiheitsstandards entspricht. Weitere Informationen finden Sie unter Barrierefreiheit in Visual Studio und ASP.NET.
UnorderedList 2

Die Elemente werden ohne Tabellenstruktur angezeigt. Gerendertes Markup besteht aus einem ul-Element, das li-Elemente enthält.
Dieses Feld ist seit ASP.NET 4 neu und stellt nur für die Steuerelemente CheckBoxList und RadioButtonList eine gültige Option dar.

Beispiele

Das folgende Beispiel zeigt ein Listensteuerelement, dessen Layout durch den Table Enumerationswert definiert ist.


<%@ Page Language="C#" AutoEventWireup="True" %>
<%@ Import Namespace="System.Data" %>
 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
   <script runat="server">
 
      ICollection CreateDataSource() 
      {
      
         // Create sample data for the DataList control.
         DataTable dt = new DataTable();
         DataRow dr;
 
         // Define the columns of the table.
         dt.Columns.Add(new DataColumn("IntegerValue", typeof(Int32)));
         dt.Columns.Add(new DataColumn("StringValue", typeof(String)));
         dt.Columns.Add(new DataColumn("CurrencyValue", typeof(double)));
         dt.Columns.Add(new DataColumn("ImageValue", typeof(String)));
 
         // Populate the table with sample values.
         for (int i = 0; i < 9; i++) 
         {
            dr = dt.NewRow();
 
            dr[0] = i;
            dr[1] = "Description for item " + i.ToString();
            dr[2] = 1.23 * (i + 1);
            dr[3] = "Image" + i.ToString() + ".jpg";
 
            dt.Rows.Add(dr);
         }
 
         DataView dv = new DataView(dt);
         return dv;
      }
 
 
      void Page_Load(Object sender, EventArgs e) 
      {

         // Load sample data only once, when the page is first loaded.
         if (!IsPostBack) 
         {
            ItemsList.DataSource = CreateDataSource();
            ItemsList.DataBind();
         }

      }
 
      void Button_Click(Object sender, EventArgs e) 
      {
 
         // Set the repeat direction based on the selected value of the
         // DirectionList DropDownList control.
         ItemsList.RepeatDirection = 
             (RepeatDirection)DirectionList.SelectedIndex;

         // Set the repeat layout based on the selected value of the
         // LayoutList DropDownList control.
         ItemsList.RepeatLayout = (RepeatLayout)LayoutList.SelectedIndex;

         // Set the number of columns to display based on the selected
         // value of the ColumnsList DropDownList control.
         ItemsList.RepeatColumns = ColumnsList.SelectedIndex;

         // Show or hide the gridlines based on the value of the
         // ShowBorderCheckBox property. Note that gridlines are displayed
         // only if the RepeatLayout property is set to Table.
         if ((ShowBorderCheckBox.Checked) 
             && (ItemsList.RepeatLayout == RepeatLayout.Table)) 
         {
            ItemsList.BorderWidth = Unit.Pixel(1);
            ItemsList.GridLines = GridLines.Both;
         }    
         else  
         {
            ItemsList.BorderWidth = Unit.Pixel(0);
            ItemsList.GridLines = GridLines.None;
         }
    
      }    
 
   </script>
 
<head runat="server">
    <title>DataList Example</title>
</head>
<body>
 
   <form id="form1" runat="server">

      <h3>DataList Example</h3>
 
      <asp:DataList id="ItemsList"
           BorderColor="black"
           CellPadding="5"
           CellSpacing="5"
           RepeatDirection="Vertical"
           RepeatLayout="Table"
           RepeatColumns="0"
           BorderWidth="0"
           runat="server">

         <HeaderStyle BackColor="#aaaadd">
         </HeaderStyle>

         <AlternatingItemStyle BackColor="Gainsboro">
         </AlternatingItemStyle>

         <HeaderTemplate>

            List of items

         </HeaderTemplate>
               
         <ItemTemplate>

            Description: <br />
            <%# DataBinder.Eval(Container.DataItem, "StringValue") %>

            <br />

            Price: <%# DataBinder.Eval(Container.DataItem, "CurrencyValue", "{0:c}") %>

            <br />

            <asp:Image id="ProductImage"
                 AlternatingText='<%# DataBinder.Eval(Container.DataItem, "StringValue") %>'
                 ImageUrl='<%# DataBinder.Eval(Container.DataItem, "ImageValue") %>'
                 runat="server"/>

         </ItemTemplate>
 
      </asp:DataList>
 
      <hr />

      <table cellpadding="5">

         <tr>

            <th>

               Repeat direction:

            </th>

            <th>

               Repeat layout:

            </th>

            <th>

               Repeat columns:

            </th>

            <th>

               <asp:CheckBox id="ShowBorderCheckBox"
                    Text="Show border"
                    Checked="False" 
                    runat="server" />

            </th>

         </tr>

         <tr>

            <td>

               <asp:DropDownList id="DirectionList" 
                    runat="server">

                  <asp:ListItem>Horizontal</asp:ListItem>
                  <asp:ListItem Selected="True">Vertical</asp:ListItem>

               </asp:DropDownList>

            </td>

            <td>

               <asp:DropDownList id="LayoutList" 
                    runat="server">

                  <asp:ListItem Selected="True">Table</asp:ListItem>
                  <asp:ListItem>Flow</asp:ListItem>

               </asp:DropDownList>

            </td>

            <td>

               <asp:DropDownList id="ColumnsList" 
                    runat="server">

                  <asp:ListItem Selected="True">0</asp:ListItem>
                  <asp:ListItem>1</asp:ListItem>
                  <asp:ListItem>2</asp:ListItem>
                  <asp:ListItem>3</asp:ListItem>
                  <asp:ListItem>4</asp:ListItem>
                  <asp:ListItem>5</asp:ListItem>

               </asp:DropDownList>

            </td>

            <td>

                

            </td>


         </tr>

      </table>     
         
      <asp:LinkButton id="RefreshButton" 
           Text="Refresh DataList" 
           OnClick="Button_Click" 
           runat="server"/>
 
   </form>
 
</body>
</html>


<%@ Page Language="VB" AutoEventWireup="True" %>
<%@ Import Namespace="System.Data" %>
 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
   <script runat="server">
 
      Function CreateDataSource() As ICollection 
      
         ' Create sample data for the DataList control.
         Dim dt As DataTable = New DataTable()
         dim dr As DataRow
 
         ' Define the columns of the table.
         dt.Columns.Add(New DataColumn("IntegerValue", GetType(Int32)))
         dt.Columns.Add(New DataColumn("StringValue", GetType(String)))
         dt.Columns.Add(New DataColumn("CurrencyValue", GetType(Double)))
         dt.Columns.Add(New DataColumn("ImageValue", GetType(String)))
 
         ' Populate the table with sample values.
         Dim i As Integer

         For i = 0 To 8 

            dr = dt.NewRow()
 
            dr(0) = i
            dr(1) = "Description for item " & i.ToString()
            dr(2) = 1.23 * (i + 1)
            dr(3) = "Image" & i.ToString() & ".jpg"
 
            dt.Rows.Add(dr)

         Next i
 
         Dim dv As DataView = New DataView(dt)
         Return dv

      End Function
 
      Sub Page_Load(sender As Object, e As EventArgs) 

         ' Load sample data only once, when the page is first loaded.
         If Not IsPostBack Then 
     
            ItemsList.DataSource = CreateDataSource()
            ItemsList.DataBind()
         
         End If

      End Sub
 
      Sub Button_Click(sender As Object, e As EventArgs) 
 
         ' Set the repeat direction based on the selected value of the
         ' DirectionList DropDownList control.
         ItemsList.RepeatDirection = _
             CType(DirectionList.SelectedIndex, RepeatDirection)

         ' Set the repeat layout based on the selected value of the
         ' LayoutList DropDownList control.
         ItemsList.RepeatLayout = CType(LayoutList.SelectedIndex, RepeatLayout)

         ' Set the number of columns to display based on the selected
         ' value of the ColumnsList DropDownList control.
         ItemsList.RepeatColumns = ColumnsList.SelectedIndex

         ' Show or hide the gridlines based on the value of the
         ' ShowBorderCheckBox. Note that gridlines are displayed
         ' only if the RepeatLayout property is set to Table.
         If ShowBorderCheckBox.Checked _
             And ItemsList.RepeatLayout = RepeatLayout.Table Then 

            ItemsList.BorderWidth = Unit.Pixel(1)
            ItemsList.GridLines = GridLines.Both
         
         Else  
    
            ItemsList.BorderWidth = Unit.Pixel(0)
            ItemsList.GridLines = GridLines.None
         
         End If
    
      End Sub    
 
   </script>
 
<head runat="server">
    <title>DataList Example</title>
</head>
<body>
 
   <form id="form1" runat="server">

      <h3>DataList Example</h3>
 
      <asp:DataList id="ItemsList"
           BorderColor="black"
           CellPadding="5"
           CellSpacing="5"
           RepeatDirection="Vertical"
           RepeatLayout="Table"
           RepeatColumns="0"
           BorderWidth="0"
           runat="server">

         <HeaderStyle BackColor="#aaaadd">
         </HeaderStyle>

         <AlternatingItemStyle BackColor="Gainsboro">
         </AlternatingItemStyle>

         <HeaderTemplate>

            List of items

         </HeaderTemplate>
               
         <ItemTemplate>

            Description: <br />
            <%# DataBinder.Eval(Container.DataItem, "StringValue") %>

            <br />

            Price: <%# DataBinder.Eval(Container.DataItem, "CurrencyValue", "{0:c}") %>

            <br />

            <asp:Image id="ProductImage"
                 AlternatingText='<%# DataBinder.Eval(Container.DataItem, "StringValue") %>'
                 ImageUrl='<%# DataBinder.Eval(Container.DataItem, "ImageValue") %>'
                 runat="server"/>

         </ItemTemplate>
 
      </asp:DataList>
 
      <hr />

      <table cellpadding="5">

         <tr>

            <th>

               Repeat direction:

            </th>

            <th>

               Repeat layout:

            </th>

            <th>

               Repeat columns:

            </th>

            <th>

               <asp:CheckBox id="ShowBorderCheckBox"
                    Text="Show border"
                    Checked="False" 
                    runat="server" />

            </th>

         </tr>

         <tr>

            <td>

               <asp:DropDownList id="DirectionList" 
                    runat="server">

                  <asp:ListItem>Horizontal</asp:ListItem>
                  <asp:ListItem Selected="True">Vertical</asp:ListItem>

               </asp:DropDownList>

            </td>

            <td>

               <asp:DropDownList id="LayoutList" 
                    runat="server">

                  <asp:ListItem Selected="True">Table</asp:ListItem>
                  <asp:ListItem>Flow</asp:ListItem>

               </asp:DropDownList>

            </td>

            <td>

               <asp:DropDownList id="ColumnsList" 
                    runat="server">

                  <asp:ListItem Selected="True">0</asp:ListItem>
                  <asp:ListItem>1</asp:ListItem>
                  <asp:ListItem>2</asp:ListItem>
                  <asp:ListItem>3</asp:ListItem>
                  <asp:ListItem>4</asp:ListItem>
                  <asp:ListItem>5</asp:ListItem>

               </asp:DropDownList>

            </td>

            <td>

                

            </td>


         </tr>

      </table>     
         
      <asp:LinkButton id="RefreshButton" 
           Text="Refresh DataList" 
           OnClick="Button_Click" 
           runat="server"/>
 
   </form>
 
</body>
</html>

Das folgende Beispiel zeigt Markup, das für ein CheckBoxList Steuerelement gerendert wird, dessen RepeatLayout Eigenschaft auf Flowfestgelegt ist.

<span id="ctl00_MainContent_CheckBoxList1">  
  <input id="ctl00_MainContent_CheckBoxList1_0" type="checkbox"   
    name="ctl00$MainContent$CheckBoxList1$0" value="Item 1" />  
  <label for="ctl00_MainContent_CheckBoxList1_0">Item 1</label>  
  <br />  
  <input id="ctl00_MainContent_CheckBoxList1_1" type="checkbox"  
    name="ctl00$MainContent$CheckBoxList1$1" value="Item 2"/>  
  <label for="ctl00_MainContent_CheckBoxList1_1">Item 2</label>  
  <br />  
  <input id="ctl00_MainContent_CheckBoxList1_2" type="checkbox"  
    name="ctl00$MainContent$CheckBoxList1$2" value="Item 2" />  
  <label for="ctl00_MainContent_CheckBoxList1_2">Item 2</label>  
</span>

Das folgende Beispiel zeigt Markup, das für ein CheckBoxList Steuerelement gerendert wird, dessen RepeatLayout Eigenschaft auf OrderedListfestgelegt ist.

<ol id="ctl00_MainContent_CheckBoxList3">  
  <li>  
    <input id="ctl00_MainContent_CheckBoxList3_0" type="checkbox"  
      name="ctl00$MainContent$CheckBoxList3$0" value="Item 1" />  
    <label for="ctl00_MainContent_CheckBoxList3_0">Item 1</label>  
  </li>  
  <li>  
    <input id="ctl00_MainContent_CheckBoxList3_1" type="checkbox"  
      name="ctl00$MainContent$CheckBoxList3$1" value="Item 2" />  
    <label for="ctl00_MainContent_CheckBoxList3_1">Item 2</label>  
  </li>  
  <li>  
    <input id="ctl00_MainContent_CheckBoxList3_2" type="checkbox"  
      name="ctl00$MainContent$CheckBoxList3$2" value="Item 2" />  
    <label for="ctl00_MainContent_CheckBoxList3_2">Item 2</label>  
  </li>  
</ol>

Das folgende Beispiel zeigt Markup, das für ein CheckBoxList Steuerelement gerendert wird, dessen RepeatLayout Eigenschaft auf Tablefestgelegt ist.

<table id="ctl00_MainContent_CheckBoxList2">  
  <tr>  
    <td>  
      <input id="ctl00_MainContent_CheckBoxList2_0" type="checkbox"  
        name="ctl00$MainContent$CheckBoxList2$0" value="Item 1" />  
      <label for="ctl00_MainContent_CheckBoxList2_0">Item 1</label>  
    </td>  
  </tr>  
  <tr>  
    <td>  
      <input id="ctl00_MainContent_CheckBoxList2_1" type="checkbox"  
        name="ctl00$MainContent$CheckBoxList2$1" value="Item 2" />  
      <label for="ctl00_MainContent_CheckBoxList2_1">Item 2</label>  
    </td>  
  </tr>  
  <tr>  
    <td>  
      <input id="ctl00_MainContent_CheckBoxList2_2" type="checkbox"  
        name="ctl00$MainContent$CheckBoxList2$2" value="Item 3" />  
      <label for="ctl00_MainContent_CheckBoxList2_2">Item 3</label>  
    </td>  
  </tr>  
</table>

Das folgende Beispiel zeigt Markup, das für ein CheckBoxList Steuerelement gerendert wird, dessen RepeatLayout Eigenschaft auf UnorderedListfestgelegt ist.

<ul id="ctl00_MainContent_CheckBoxList4">  
  <li>  
    <input id="ctl00_MainContent_CheckBoxList4_0" type="checkbox"  
      name="ctl00$MainContent$CheckBoxList4$0" value="Item 1" />  
    <label for="ctl00_MainContent_CheckBoxList4_0">Item 1</label>  
  </li>  
  <li>  
    <input id="ctl00_MainContent_CheckBoxList4_1" type="checkbox"  
      name="ctl00$MainContent$CheckBoxList4$1" value="Item 2" />  
    <label for="ctl00_MainContent_CheckBoxList4_1">Item 2</label>  
  </li>  
  <li>  
    <input id="ctl00_MainContent_CheckBoxList4_2" type="checkbox"  
      name="ctl00$MainContent$CheckBoxList4$2" value="Item 2" />  
    <label for="ctl00_MainContent_CheckBoxList4_2">Item 2</label>  
  </li>  
</ul>

Hinweise

Die RepeatLayout Enumeration stellt die verschiedenen Layoutoptionen für ein Listensteuerelement dar.

Gilt für:

Weitere Informationen